#F1 History: The First Turbocharged Engine – A Renault Revolution
Brought to you by TheJudge13 chronicler Jennie Mowbray
“Success is not final, failure is not fatal: it is the courage to continue that counts.”
Turbochargers and reliability: two words that were not linked together at the dawn of the first turbocharge era in Formula One, 1977. Renault’s initial turbocharged engine had a very rocky start and was plagued by overheating and multiple failures, as well as problems associated with its increased weight and massive turbo lag.
Supercharged engines had been allowed in Formula One from its inception in 1950 and had initially been widely used. However, due to problems with excessive fuel consumption and difficulties with cooling they had been falling out of favour with nobody taking up the option since 1951. The last win for a supercharged car had been in 1951 when Fangio had won, at Spain, in his Alfa Romeo.
Bans and limitations
From 1961 compressors were banned and engines were decreased to a maximum size of 1.5 litres. In 1966, the engine capacity for normally aspirated engines was once more increased to 3 litres and the 1.5 litre supercharged engines were again permitted. Even then, the teams were slow to take up the alternative and it would be more than ten years before Renault would make their first foray into Formula One, racing at the British Grand Prix in 1977 with their ground breaking Renault-Gordini V6 1.5 litre turbocharged engine.
Renault had been experimenting with turbochargers on their sports car engines for several years, and by 1975 they were winning races with them. In 1977 they hired Jean-Pierre Jabouille, not only as their driver, but also for his exceptional engineering skills. He was one of the last Formula One drivers who was also an engineer. His mechanical aptitude made him an ideal candidate for helping to further develop their innovative car and engine.
Renault’s first 4 races were troubled by engine and mechanical failures, and their season culminated in failing to qualify at the Canadian Grand Prix where their only driver, Jabouille, struggled to get his tyres up to temperature in the cold and wet qualifying conditions. He was more than 7 seconds behind the pole setter Mario Andretti, making the team decide to withdraw from the closing Grand Prix of the season in Japan.
The Yellow Teapot
The bright yellow Renault was not taken seriously around the paddock and Ken Tyrrell sarcastically christened it “The Yellow Teapot” due to the fact that it was often seen parked at the side of the track where it had broken down, emitting steam (or smoke!) from its engine. Keith Duckworth, designer of the Cosworth DFV, once said, “I think that in any racing engine, the nearer you are to it disintegrating, in general the better its performance will be.” Unfortunately the Renault turbocharged engine disintegrated far too often!
In early December 1977 the team took the car testing at the Paul Ricard circuit in France, along with Jackie Stewart who was test driving the car for a series of articles he was writing. Jackie Stewart commented at the time that “I tried to line up the car to take the radius of a corner and then applied the power afterwards, but nothing happened. No power arrived until I had exited the corner! The basic behaviour of the car was truly exciting, but if I must criticise I would say that it was inclined to be unstable at high speed, which I believe was due to the front aerodynamics.”
After missing the first two races of the 1978 season the team were keen to prove the ability of their new engine at altitude at Kyalami. Turbocharged engines had a sizable advantage at altitude because they could adjust for the loss of power experienced by normally aspirated engines by making the turbocharger blow harder. They were still using the RS01, but had a new chassis with improved aerodynamics and the car performed well at practice managing 89 laps without a breakdown! Unfortunately, the race ended with another engine failure on lap 38 of the race.
It was at Monaco, their eighth race and 10 months after their debut, that Jabouille finally had his first finish, albeit in tenth place and four laps behind the winner, but at least the engine had made it to the end of a race! The 1978 season continued with numerous engine breakdowns (including a low point where the engine failed on the starting grid in France), culminating with their first points finish with a fourth place at the United States Grand Prix, the penultimate race of the season.
New concept and new driver
For 1979, Renault were developing a new chassis, the RS10 ground effect car – at the same time they added a second driver to the team. Rene Arnoux, who had won the European Formula 2 Championship in 1977, was now driving alongside Jean-Pierre Jabouille. The RS10 was still not completed so they started the season still driving the modified RS01.
It was again a difficult start to the year at the opening race in Argentina, with Jabouille struggling with an overheating engine and Arnoux only managing to complete 14 laps in the two days of practice because of three engine failures. Arnoux failed to qualify for his first race for Renault but was eventually able to start the race as Patrese had to withdraw after a collision during warm-up which left a vacant place on the grid. Both cars had engine failures early in the race.
It was at the third race at Kyalami that the Renault team first began to see some positive results from all their hard work when Jabouille surprised everyone by putting his car on pole position in front of the two Ferrari’s. Jabouille managed to fight off the Ferrari’s to keep the lead at the end of the first lap but on the second lap heavy rain started to fall. The two Ferrari’s and Jabouille then exchanged the lead several times over the next two laps despite all of them being on slick tyres and struggling for traction on the increasingly wet track. The race was red flagged at the end of the third lap and following the restart Jabouille suffered another engine failure during the race, just as he was about to pass Andretti for fourth place. Arnoux had also been going well when he had a left rear tyre blow-out which took him out of the race.
It was at the 1979 Monaco Grand Prix that the team first fitted their new twin-turbo engine to their brand new ground effects RS10 chassis. The cars performance with twin-turbo was so superior that Jabouille and Arnoux no longer recognised their engines as the throttle response time was so fast. However, they still struggled to qualify due to ongoing mechanical issues and neither car finished the race.
Francois Guiter, a partner of the Renault F1 program, said after the race, “It was a difficult time; Gerard was thinking it was not going to work and for the first time looked depressed. I walked over to him and tried to give him some words of encouragement. I told him, ‘Go on! Keep going! It’s going to work.’”
Hard work pays off
It was at the very next race, at Dijon in France, that the all the pieces finally fell into place. Due to the cancellation of the Swedish Grand Prix, Renault had had more than a month extra development time to prepare and test their car for the French Grand Prix. During qualifying Jabouille got his second pole position for the year with Arnoux beside him on the front of the grid. When the car finally managed to get to the end of the race without breaking down Jabouille was still in the lead, with Arnoux and Villeneuve almost 15 seconds behind fighting wheel to wheel for second place all the way to the chequered flag. It was a French driver winning the French Grand Prix in a French car with a French engine, shod with French tyres and powered using French fuel! The team and the local crowd were ecstatic. This was Renault’s first victory since 1906 and the first win for a supercharged engine since Fangio in 1951.
It was during a tyre test at Dijon in 1979 that Harvey Postlethwaite was watching the Renault speed-trap times, later recalling, “I will never forget it. Suddenly, the trap recorder read out a speed about 20mph faster than anything we’d ever seen before. That was it: the Renault was coming good. Soon we will all need turbos.”
Within two years Ferrari had become the first constructor to switch over to turbo power. They won two Grand Prix’s in 1981 having not won any the previous year followed by 1982, winning the Constructor’s Championship. Brabham, with Piquet driving their BMW turbo, was the first turbo powered car to win the Driver’s Championship in 1983.
The writing was on the wall for normally aspirated engines. 11 teams in 1982 were using the Ford-Cosworth DFV’s, but by 1984 only Tyrrell used them for the whole season; everyone else had switched over to the new, and increasingly powerful, turbocharged engines. Despite their efforts in introducing and developing turbocharged engines Renault would never win a drivers’ or constructors’ championship with them, their best being 2nd place in the Driver’s Championship with Alain Prost in 1983, as well as 2nd place in the Constructor’s Championship in the same year.
It will be interesting to observe in the upcoming 2014 season the challenge of constructing the latest breed of turbocharged engines in Formula One. Despite some early indications from Jerez, the jury is still out on which engine will win the race to become both the fastest and most reliable.